Machine



Sept. 27, 1932. J, HAlL 1,879,211

MACHINE Filed Sept. 10, 193i 5 Sheets-Sheet 1 INVENTOR wvmis%d W60:nvomsv Sept. 27, 1932. J, HA|L 1,879,211

MACHINE Filed Sept. 10, 1931 3 Sheets-Sheet 2 a 1,6 ATTORNEY Sept. 27,1932. HAlL 1,879,211

MACHINE Filed Sept. 10, 1931 3 Sheets-Sheet 3 u 1 j r f 73 g 090 IINVENTOR Patented Sept. 27, 1932 U ITED STATES PATENT OFFICE JAMES L.HAIL, 01' CBOCKET'I, TEXAS, ASSIGNOB ONE-HAL! '10 SIDNOB Ia.

MURCHISON, OI CROCKE'IT, TEXAS MACHINE Application filed September 10,1981. Serial No. 582,157.

My present invention has reference to a simple, novel and useful machinefor use by cabinet makers, attern makers, light metal workers, etc., andmy object is the provision lot a machine of this character which w1llsuccessfully perform a plurality of operations required in the woodworking or light metal working arts, and which may be accuratelyoperated by either a skilled or a 1 non-skilled mechanic.

The invention will be fully and comprehensively understood from aconsideratlon of the followin detailed description when read inconnection with the accompanying drawings'which form part of theappl1cation, with the understanding, however, that the improvement iscapable of extended application and is not confined to the exact showingof the drawings nor to the preclse 0 construction described and,therefore, such changes and modifications may be made therefrom as donot affect the spirit of the invention nor exceed the scope thereof asexpressed in the appended claim.

In the drawings:

Figure 1 is a side elevation of proved machine.

Figure 2 is a. plan view of the upper shaft with parts in section.

Figure 3 is a fragmentary elevatlonof the upper part of the machineshowing the upper shaft for the saw influenced 1n one d1rection by aspring.

Figure 4 is a front elevation of the machine.

Figure 5 is a detail elevation with parts in section to betterillustrate the guide for the saw and the presser for the work operatedon by the saw.

Figure 6 is a view to illustrate the manner in which short saw bladesmay be coupled to the shafts, the partsbeing separated.

Figure 7 is a front elevation thereof.

Figure 8 is an enlarged sectional View through the bearing for the lowershaft, the bearing for the upper shaft being of a similar construction.I

Figure 9 is a sectional view approximately on the line 9-9 of Figure 8.

Figure 10 is a fragmentary elevation with my impzrts in section tobetter illustrate the upper d and the mount therefor.

Figure 11 is a top plan view of the front portion of the work presser.

Figure 12 illustrates respectively a top plan and a side elevation ofthe saw guide.

Figure 13 is a sectional view approximately on the line 13-13 of Figure10.

Figure 14 is a lon itudinal sectional view through the lower shdabletable.

Figure 15 is a sectional view approximately on the line 15-15 of Figure14.

Figure 16 is a detail sectional view through the tiltable table.

Figure 17 is a detail sectional view through the motor driven wheel towhich the lower shaft is adjustably connected.

Figure 18 is a front elevation of the wheel.

Figure 19 is a plan view of the support or bed for the motor.

Figure 20 is a sectional view approximately on the line 2020 of Figure1.

The bed 1 of the improvement is preferably constructed of timbers andhas at its forward end an elevated substantially rectangular portionwhose upper part is indicated for distinction by the numeral 2. Theelevated portion is in the nature of-an open frame and directly to therear of the said portion 2 there is mounted on the bed 1 a support forthe operating motor 3 for the machine. The motor has its base fixed on aplate 4 which is slidable between rails 5. The confronting edges of theplate 4 and the rails 5 are beveled in opposite directions, as clearlydisclosed by Figure 20 of the drawings and the rails 5 are secured upona bottom plate 6. The plate 6, from its outer end is provided with acentral longitudinally extending slot 7 that receives therethrough theshank of 95 a headed bolt 8 which passes through the plate 4 and whichis engaged by a winged nut 9. By this arrangement it will be noted thatthe motor can be moved longitudinally on its'bed. The bed or motorsupport is also susceptible to lateral movement and to accomplish thisIfix upon the under face of the plate 6 a member 10 that has a threadedbore, and there is screwed through this bore the threaded portion of ashaft 11. The

shaft is held from longitudinal movement by collars or like elements 12that are fixed thereon and are in contact with the opposite sides of thebed 1, and the outer end of the shaft 11 is provided with a turningwheel 13. The lateral and longitudinal adjustment of the motor 2 ishighly desirable and is in fact necessary inorder that an endless belt14 which is trained over a pulley wheel 15 on the shaft of the motor 3be sustained taut when the said belt is trained over any one of aplurality of pulley wheels 16 that are arranged face to face and arefixed on a shaft 17 journaled in suitable bearings which are fixed onthe bed 1, adjacent to the forward end thereof. The shaft 17 is arrangedtransversely with respect to the longitudinal plane of the bed 1, andthe outer end of the shaft is hollow to provide a socket 18. Threadedinto the socket end of the shaft there is a short bolt 17'. The socketend 18 of the shaft is thus in the nature of a chuck and the said chuckis designed to receive therein the shafts or mandrels for differenttypes of tools such, for instance, as a rotary saw, a drill bit, sandingwheel, an emery or grinding wheel,

etc.

The side of the bed 1,'adjacent which the chuck and the pulley wheels 16are arranged has fixed thereon a pair of spaced outwardly directedparallel rods 19, respectively, and these rods are received throughopenings in depending cars 20 on the base or bed 21 for a slidable table22. The member 21 (see Fig. 14) is provided with a centrallongitudinally arranged slot 23 through which passes a bolt 23' fixed tothe bottom of the table 22, the said bolt being engaged by a wing nut24. The sides of the table are provided with upstanding flanges 25 tocontact with the sides of the table 22 and serve as guides to preventthe lateral movement of the table on the bed plate 21. The table 22 mayhave its upper face inclined, as disclosed by the drawings, in thenature of a box-like member which has its top slotted and one of itssides open to receive the short shaft or mandrel for the rotary saw, orthe grinding or sanding wheels or discs.

The inner end of the shaft 17 has fixedly secured thereon a disc wheel26 (see Figures 17 and 18) provided with any desired number of threadedopenings 27 arranged at varying distances from the axial center of thewheel or disc 26, and any one of these openings is designed to havethreaded therein a bolt member 28 that is also threaded through thelower end of an arm or link 29, the said link being held from contactwith the disc or wheel 26 by a sleeve. 30 that is arranged around thebolt 28. The upper end of the link 29 has pivotally fixed thereto theparallel arms of the substantially U-shaped member but the said tablemay be y or yoke 31, and in this yoke there is pivoted the lower end ofa shaft 32.

The shaft 32 is square in cross section and is mounted for slidablemovement through a bearing in the part 2 of the bed 1. The bearing is ofa particular and peculiar construction, the same including a perforatedsleeve 33 that has an inner liner 34 of Babbitt metal and the liner whenpoured into the sleeve will have parts thereof passed through theapertures in the said sleeve to thereby interlock the liner to thesleeve. The bore of the liner is square to corres 0nd to the crosssectional contour of the sha t 32. A nut 35 is screwed on the lower endof the sleeve 33 and contacts with the under face of the part 2 of thebed and the sleeve also passes through and affords a support for thelower arm 36 of a substantially U-shaped frame 37. The upper arm 38 forthe frame 37 has passed therethrough the sleeve portion 39 of a bearingsimilar to that just described, the upper bearing however, being shorterthan the lower bearing.

The sleeve 33 for the lower bearing also asses. through and provides apivot for the base or bottom of a cradle 40 for the swingable saw tablewhich will hereinafter be described in detail. A disc or like element 41which is fixed to the lower arm 36 of the frame 37 is arranged aroundthe upper portion of the sleeve 33 and the outer end of the said sleeveis closed by a cap nut 42 that affords a packing box for a lubricantsaturated waste 43, the said waste being in direct contact with theshaft 32, the upper bearing 39 being provided with a like packing box.

The shaft 32 provides the lower shaft of the improvement. The uppershaft, indicated by the numeral 44, passes through the upper bearing 39.The upper shaft is also square in cross section and has swivelly securedto its outer end a yoke 45. Threaded through this oke there is anelastic strap 46 and the ends of the strap are clamped by removableplates 47 against the opposite sides of the upper angle arm 48 of astandard 49. The plates 47 have passed therethrough suitable bolts whichare engaged by wing nuts 50, the said bolts also passing through theupper arm 48 of the standard 49.

The standard 49 has its lower end provided with a stub shaft extensionwhich is journaled through a bearing opening in the part 2 of the bed 1,the said extension being threaded and being engaged by a nut and theportion of the shaft which contacts with the part 2 of the bed is formedwith a bearing enlargement 50. Secured to the vertical and to thehorizontal arm of the standard 49 there are angle brace members 51 thatreceive thereb tween the frame 37, and with a construction as abovedescribed it will be noted that the frame 37 is so arranged andsupported that the same is subjected to only the slightest amount ofstrain.

The shafts 44 and 32 have their confronting ends bifurcated and providedwith alining angularly arranged slots 52, respectively, that receivetherein laterally extending pins 53 on the ends of hack saw or liketoothed blades 54. The yieldable means, comprising the elastic element46, will hold the saw on the shafts, and when it is desired that sawblades of different lengths be employed I make use of one or morecouplers, such as disclosed by Figures 6 and 7 of the drawings. Thecouplers are in the nature of .strips or plates 55 that have one oftheirends bifurcated and provided with angle slots and their second endsprovided with laterally extending pins 61. The slots receive therein thepins 53 on the short saw blades and the pins 61 are received in theangle slots in one or in both of the shafts 3244. The cradle 40 is inthe nature of a substantially U-shaped member whose parallel sides areprovided with notches to receive therein trunnions at the ends of thesaw table 63. The saw table is provided with a central opening 64 forthe passage of the saw blade, and the under face of the table has fixedthereon or formed therewith arched or segmental members 65 provided withcentral slots 66. Passed through these slots there are headed boltswhich also pass through the sides of the table. These bolts have screwedthereon winged nuts 67 for holding the table when tilted to desiredangles.

Fixed to the bottom of the cradle there is an upstanding element or arm68 that has threaded through its upper end a bolt member 69 that carrieson its outer end an angularly notched guide 70 to contact with thestraight back of the saw blade 54 and thus serve as a guide for the saidblade.

The work is held on the table 63 by the roller 71 whose shaft isjournaled through lugs that depend from aplate 72 that has an angle endthrough which is passed a bolt 73 that also passes between the arms of aU-shaped strap 74, the said bolt being engaged by a suitable nut and thearms of the strap, which provide the body of the work presser arepivoted, as at 75, to the angle brace members 51. There is guidedthrough alining openings in the upper arm 38 of the frame 37 and theangle arm 48 of the standard 49 a rod or bar 76 which is provided withspaced apertures through any one of which there is passed a pin 77 tohold on the said rod a disc 78 and the said disc provides a rest for thelower convolution of a coiled pressure spring 79 whose second endcontacts with the inner face of the arm 48. The lower end of the rod 76'has screwed therein the reduced ends of oppositely disposed headedstubshafts 80 on which are journaled rollers 81. The lower .end of therod 76 is received between the arms of the member 74 and the rollers 81are in contact with the upper edges of the said member 74. Thus thespring influenced rod exerts a downward pressure against the member 74and forces the roller or rollers 71 against the work supported on thetable 63.

As the saw'is susceptible to being turned to rightangular positions theouter end of the plate 72 is notched but is provided with an angularextension 82, and this extension as well as the outer end of the plateproper are provided with hearing openings for the stud on the mount forthe roller 71 and the said stud is designed to be contacted by frictionelements in the nature of short bolts 83 which are screwed through theouter edge of the extension and through the opposite edge of the plate72 for frictional contact with the stud, and consequently holding theroller 71 at opposite or rightangular positions.

Slidable through the top element 38 of the frame 37, but held from freemovement by a bolt or like element 84 there is a rod or bar 85 that hasa transverse opening adjacent its lower end for the passage of a stem 86on an offset or angle plate 87. The stem is held adjusted by a bindingelement 88 on the rod 85, and the member 87 supports thereon a. fibreblock 89 and the said block has one of its faces and its outer endprovided with slots 90, respectively. The rear or non-sharpened edge ofthe blade 54 is designed to be received inreither of the slots 90 inaccordance with the angular positions of the blade. To turn the bladefrom the osition disclosed by the drawings it is merely necessary toturn the shafts 32 and 44, as the same have pivot or swivel connectionsrespectively with the link 29 and the yoke 45, and as above stated, thepresser roll 71 is arranged at different angle positions on thesupporting plate therefor when the blade is turned and likewise the sawguide is brought, by the turning and adjustment of the stem on the rod85 to bring elther of the notches 90 to a position to receive thereinthe back edge of the blade 54.

In lieu of the elastic yieldable means 46 the upper shaft member 44 maybe elongated and may pass through a bearing opening in the arm 48 of thestandard 49, as disclosed by Figure 3 of the drawings. In this instancethe upper end of the shaft is threaded and has screwed thereon a nut 91which contacts with a washer, and the said washer is contacted by theouter convolution of a coiled expansion spring 92 whose second end restson the top of the arm 43, and the spring 92, of course, draws on theshaft section 49 to hold the blade 54 clamped between this shaft sectionand the lower shaft section.

The length of stroke of the blade is regulated by the adjustment of thelink 29 on the wheel or disc 26, and the rate of speed of the chuckcarrying shaft as well as that of. the vertical reciprocatory saw blade54 is regulated by the arrangement of the belt 14: over any one of thepulleys 16, the bed or support for the motor being adjusted as reviouslydescribed to arrange the motor pu ey wheel 15 in proper alinement withthe respective pulleys 16 and for tensioning the belt 14.

My improvement is of a comparatively simle nature and, as above stated,will successully perform a plurality of operations required in eitherthe wood working or light metal working arts. The foregoing descriptionis believed sufiiciently ample to enable others skilled in the art towhich the invention relates to fully comprehend the construction andadvantages of the machine so that further "detailed description is notbelieved necessary.

Having described the invention, I claim 20 In combination with upper andlower vertically disposed reciprocatory shafts for a saw blade, ofastandard having an angle end carrying a flexible element to which theupper shaft is connected, an angle brace between the standard and theangle end thereof, a strap ivotally secured to the brace, a platesecured y a nut and bolt to the stra a work-engaging roller on the outeren of the plate, a rod movable through the angle arm of the standard andhaving rollers journaled thereon adjacent to its lower end to ride onthe upper edge of the strap, a spring around the rod in contact with theangle arm of the standard, and an adjustable element on the rod withwhich the lower end of the spring contacts.

In testimony whereof I aflix my signature.

J S L. HAIL.

